New 👉 Ask your RBI Grade B 2025 Preparation Queries Here!!

    Register

    Question

    Which among the following is not the main function of

    lubricating oil? 
    A to maintain the temperature of engine Correct Answer Incorrect Answer
    B to reduce the friction Correct Answer Incorrect Answer
    C to reduce wear and tear Correct Answer Incorrect Answer
    D to take away the heat from piston Correct Answer Incorrect Answer
    E to act as seal between piston and cylinder Correct Answer Incorrect Answer

    Solution

    There are 6 Basic Functions of a Lubricant/Oil. Lubrication – Provide a film between moving parts. Cooling – Heat transfer media. Sealing – Filling in uneven surfaces Cleaning – Holding contaminants in suspension. Dampening & Cushioning – Of components under high stress. Protection – From oxidation & corrosion.

    Practice Next